A shortened nickname for Senator John McCain.
Influenced by the recent trend for abbreviating celebrity names by using the first letter of the celeb's first name, with the first syllable of the celeb's last name (ie, Jennifer Lopez=Jlo)
Pat: Did you hear John McCain's running for pres?

Ray: Good luck with that, Jmac.
by sp00ki April 26, 2007
Get the jmac mug.
NFL Fantasy award given to the person with the 'most retarded trade'.

Refers to Jason McElwain, the magical, three point, shooting autistic water boy.

Brad Johnson for Matt Schaub? Give this guy the Jmac Award.
by danielbrowniel August 29, 2008
Get the Jmac award mug.